I think the issue that keeps them from making a Piezo trem is the fact that noise from the trem operation would be amplified. I think the Piezo would even pickup the spring noise, not that it would be un-usable but buyers would expect a perfectly quiet trem operation and that would be hard to do!
John Wesley's main guitar has a PRS Singlecut with trem and piezo system. From the look of the saddles it seems to be a PRS piezo. Of all the times I've heard him play live I've never heard any noise from the trem but he could be using a really good gate.
John Pretucci's Music Man has a piezo system in a tremolo bridge and sounds awesome. I think it's just a matter of time until PRS releases a Piezo trem guitar. I'd go with a Tremonti with piezo right away!
You guys are right, there are a few Piezo trem out there! I know the noise was a discussion a few years back, but I guess that was proved wrong. So the issue with PRS must be having Piezo saddles made for the trem?
Here is my Custom 22P Trem
Paul Reed Smith 7 - S t r i n g A c t i v i s t | Fueled by P T C
John Mann machined some saddles for RMC. My understanding is that you can have Piezo and/or Synth with their system.
Pow'r Bridge 'RS' Retro-fit Saddles for PRS tremolo guitar bridges
I am pretty sure the GraphTech system that the PTC Ninja (Skitchy) put in my Baritone (which totally kicks ass, BTW) has a port on the PCB for adding a MIDI and synth output; should the spirit move me.
Love the guitar (and the minpin) tfancil! Sorry about the term in the title (damn autocorrect! and I couldn't edit it once posted). But yes, there are other systems out there... the Petrucci model as mentioned comes to mind. FANTASTIC trem with piezo. PRS COULD do it... but WILL they?